TABLE 1. 
Mean Duration of Life. 
Un- - All |All Un- Whole 
Table Lor Year ern mated one mated | Mated | mated os ei Popu- 
3's 9’s |Insects|Insects lation 
2 re OMNTGR, PRB ois lic ect ceeiy ceeds 1913 5.56 | 5.56 | 6.72 | 7.16 | 6.12 | 5.97 | 5.56 | 6.86 | 6.53 
3 Me OCI Ns 0s te ha aise Coben eters 1913 6.61 6.59 7.20 7.48 6.90 7.04 6.60 7.37 6.99 
4 Te OOD NOMUS, Bl Lin hick Ci lcawdkac vs 1913 8.70 10.51 8.70 |10.51 | 9.59 
5 ae porvonemid, Ny Yo ieee ie ees 1912 Gaee 7.44 ane 10.338 eh Wey 7.44 | 10.33 8.43 
6 T. polyphemus, Augusta, Ga. .......... 1913 8.33 | 8.05 | 6.00 |10.24 | 7.55 | 9.07 | 8.06 | 10.02 | 9.03 
7 T. polyphemus, Fall River, Mass. ...... 1913 7.03 he 8.37 7.03 | 8.37 | 7.63 
8 C. promethea, Fall River, Mass. ........ 1913 ie 5.47 | 7.00 | 8.13 oye ee 5.47 | 8.04 | 6.73 
9 @ Californica, California ........<ee«+> 1912 8.67 8.67 | 8.25 | 10.00 8.48 | 9.20 | 8.67 | 8.84 | 8.75 
10 S. cecropia, River des Peres, St. L...... 1913 10.59 9.45 8.90 | 10.29 9.78 9.90 9.77 9.93 9.86 
11 @, cecropla, St, l. (fluffy) ...c ec cecees 1913 | 11.11 |11.76 | 9.58 |10.22 [10.84 [11.05 |11.46 | 9.89 | 10.72 
12 B, Cecropia, South St La... eee es 1913 9.89 | 9.31 8.11 9.95 | 8.99 | 9.68 | 9.63 | 9.06 | 9.82 
13 BP POCLOO RT ING Yoni ee lec Ghee a eA ee 1913 10.75 | 10.48 9,25 |10.25 | 10.06 | 10.41 | 10.59 9.65 | 10.24 
14 S. cecropia, Fall River, Mass. .......... 1913 7.00 7.00 7.00 | 7.00 | 7.00 
15 S. cecropia, River des Peres ‘toatladt ides 1913 14.78 10.83 14.78 | 10.83 | 12.52 
16 S. cecropia, South St. L. (cellar)....... 1913 12.69 11:37 12.69 {11.77 | 12.16 
17 T. polyphemus, Augusta, Ga. (cellar)... 1913 11.69 12.94 11.69 | 12.94 | 12.33 
18 S. cecropia, River des Peres (house)... 1912 14.85 16.96 14.85 | 16.96 | 15.74 
‘emnoT 4g fo wy ‘pooy ‘suns, 
